Since there are 6 numbers you can roll, that means the denominator is 6.
Since there's only one 6 you can roll, the numerator is 1.
a)
1/6 because you can only get one 6 out of the 6 numbers.
b)
The probability that you roll a 6 is 1/6 and the probability that you won't roll a 6 is 5/6. Because there are 6 numbers and only one 6.
c)
5/6 because there are 5 other numbers besides the one six that you can roll out of all six.
Hopefully this helps! If you have any more questions or don't understand, please comment or DM me. :)
